Jingle jingle underneath only in 2wd

[txab]

6 hours ago, gmc.ksb said:

guess the country

 

 

 

[gmc.ksb]

11 hours ago, FKM said:

That's not the sound my 19 makes. It's just the left side and it is jungling sound that only happens in 2 wheel drive. Have you tried putting it in 4 wheel drive and see if it goes away?

No, the car in the dealer at the moment i'll wait to get it next Tuesday and i'll try the 4wd with it

[shakenfake]

18 hours ago, gmc.ksb said:

No, the car in the dealer at the moment i'll wait to get it next Tuesday and i'll try the 4wd with it

Lucky bastard!!! I envy you brother

[Otherguy]

Here is the new TSB# PIP5653L that calls for a shaft replacement.

See attached

TSB# PIP5653L.pdf

Edited March 24, 2022 by Otherguy

[AJMBLAZER]

That sounds like what was done to mine in Nov 2020. 

[Otherguy]

Yes, I have had the stub shaft replaced once already. We are going to do a comparison of parts when I get this done. New parts will be here in about 10 days and I will take some pictures of the repair/parts.

[AJMBLAZER]

Whatever they did to mine back then fixed the issue. No jingle jingle since. 

[Otherguy]

7 hours ago, AJMBLAZER said:

Whatever they did to mine back then fixed the issue. No jingle jingle since. 

 

So the problem with the "fix" they did before this revision is they used a rubber o-ring under the clip that holds the stub shaft in the diff. This was done to put pressure on the clip to hold the axle in place. This will fail over time and from what I am being told is this revision does not use an "o-ring" to prop the clip up for extra tension. The chirping sound is a lot softer since I had the stub shaft initially replaced a year ago but it came back shortly after (500~ miles). I still have to drive at least 30 miles to get it chirping in warmer weather though.

We are going to pull the diff cover when the parts come in to check everything for any abnormal wear. Like I said, I will post pictures of whatever I can so others can see.

[Jma0421]

Do you need the bumber to bumper warranty to get this fixed? 

[AJMBLAZER]

1 hour ago, Otherguy said:

 

So the problem with the "fix" they did before this revision is they used a rubber o-ring under the clip that holds the stub shaft in the diff. This was done to put pressure on the clip to hold the axle in place. This will fail over time and from what I am being told is this revision does not use an "o-ring" to prop the clip up for extra tension. The chirping sound is a lot softer since I had the stub shaft initially replaced a year ago but it came back shortly after (500~ miles). I still have to drive at least 30 miles to get it chirping in warmer weather though.

We are going to pull the diff cover when the parts come in to check everything for any abnormal wear. Like I said, I will post pictures of whatever I can so others can see.

Mine actually had the stub shaft replaced. I’ve put on over 30,000 miles since then and I do about 40 minutes of highway driving each way 3-4 days a week. The noise used to be noticeable immediately after I got on the offramp.

Never since then. 

[Otherguy]

1 hour ago, AJMBLAZER said:

Mine actually had the stub shaft replaced. I’ve put on over 30,000 miles since then and I do about 40 minutes of highway driving each way 3-4 days a week. The noise used to be noticeable immediately after I got on the offramp.

Never since then. 

Yeah they replaced mine too when they did the fix a year ago as well.

[Otherguy]

1 hour ago, Jma0421 said:

Do you need the bumber to bumper warranty to get this fixed? 

Go to your local dealer with the TSB and ask

[Chris Panke]

On 3/24/2022 at 11:55 AM, Otherguy said:

Yes, I have had the stub shaft replaced once already. We are going to do a comparison of parts when I get this done. New parts will be here in about 10 days and I will take some pictures of the repair/parts.

Any follow-up yet?  Inquiring minds want to know

 

I had the GM factory suspension lift installed and the noise went away completely but now after a few thousand miles it seems to have come back. Its not as loud as previous, but definitely the same noise and goes away shifting from 2WD to Auto AWD.

 

I shared the new bulletin with my dealer and they said they can't do the repair because the bulletin is a CV axle swap which was already done with the GM factory suspension lift.  I explained that the bulletin fix should be the stubshaft in the differential but they are saying that the work instruction and part number are for the CV shaft or "F Shaft" replacement, not the stubshaft, which I believe the stubshaft is the highlighted parts below:

[AJMBLAZER]

Yeah, highlighted parts are the stubshaft. 

[Chris Panke]

30 minutes ago, AJMBLAZER said:

Yeah, highlighted parts are the stubshaft. 

Thank you for the confirmation.  Dealer agreed to investigate it more deeply to insure the parts are compatible. Want me to bring the truck in to confirm so we'll see what they find out.